First, I think the intro parts should have been more static. It was somehow off putting to see so much shaking and so on with the singing parts. Second, while you definitely have some kind of a flow going on there with your transitions and all, I think you neglected beat sync too much during the wobbly parts. Or rather: I think your beat sync needed to be more precise and technical. Dubstep is really challenging to edit to but I think it would have been possible to pull it off without abandoning the flow of transitions. For example you could have done something with flashes or other visual effects, reduce the overall dynamism of the video and just add small shakes or other sharp camera movements on the beats etc. There's a lot of possibilities.